Various people on twitter are talking about it.
I think there is some confusion here. There is speculation that the character of Mrs Krabappel is going to be killed off (see this: http://www.radiotimes.com/news/2013-10-01/the-simpsons-edna-krabappel-is-the-bookies-favourite-to-be-killed-off), but the actress that provides the voice, Marcia Wallace, is still alive and well as far as I can see.
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